epson V300

You can also try using the Image Capture application that comes with your Mac. It can provide basic scanning functions for many scanners without having to install additional software.

If you want more advanced scanning features, then you should look on the Epson website for a macOS 10.15-compatible driver software, as directed in the earlier reply.

It's not really clear what you are asking about. But if you are looking for a Catalina driver (10.15) for your Epson V300, there is one available on the Epson support site -> https://epson.com/Support/Scanners/Perfection-Series/Epson-Perfection-V300-Photo/s/SPT_B11B193081 Select macOS 10.5.x from the dropdown list.